1
®
FN8142.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
X60008B-41, X60008C-41, X60008D-41
Precision 4.096V FGA™ Voltage
Reference
FEATURES
• Output Voltage: 4.096V
• Absolute Initial Accuracy Options:
±0.5mV & ±1.0mV
• Ultra Low Power Supply Current: 500nA
• Low Temperature Coefficient Options:
3, 5 & 10ppm/°C
• 10mA Source & Sink Current Capability
• 10ppm/1000hrs Long Term Stability
• Very Low Dropout Voltage: 100mV @ No Load
• Supply Voltage Range: 4.5V to 9.0V
• 5kV ESD (Human Body Model)
• Standard Package: 8 Ld SOIC
• Temp Range: -40°C to +85°C
• Pb-Free Plus Anneal Available (RoHS Compliant)
DESCRIPTION
The X60008-41 FGA™ voltage references are very
high precision analog voltage references fabricated in
Intersil’s proprietary F
loating Gate Analog technology,
which achieves superior levels of performance when
compared to conventional band gap, buried zener, or
X
FET
™ technologies.
FGA™ voltage references feature very high initial
accuracy, very low temperature coefficient, excellent
long term stability, low noise and excellent line and
load regulation, at the lowest power consumption
currently available. These voltage references enable
advanced applications for precision industrial &
portable systems operating at significantly higher
accuracy and lower power levels than can be achieved
with conventional technologies.
APPLICATIONS
• High Resolution A/Ds & D/As • Precision Current Sources • Smart sensors
• Digital Meters • Precision Regulators • Strain Gage Bridges
• Calibration Systems • Precision Oscillators • Threshold Detectors
• V-F Converters • Battery Management Systems • Servo Systems
TYPICAL APPLICATION
VIN = +5.0V
0.1µF
Serial
Bus
V
IN
V
OUT
GND
X60008-41
Enable
SCK
SDAT
A/D Converter
16 to 24-bit
REF IN
10µF
0.001µF
(*)
(
*
)
Also see Figure 3 in Applications Information
Data Sheet May 24, 2006
查询X60008BIS8-41供应商
2
FN8142.1
May 24, 2006
PACKAGE DIAGRAM
PIN CONFIGURATIONS
Pin Name Description
GND Ground Connection
V
IN
Power Supply Input Connection
V
OUT
Voltage Reference Output Connection
DNC Do Not Connect; Internal Connection – Must Be Left Floating
Ordering Information
PART NUMBER PART MARKING V
OUT
(V) GRADE
TEMPERATURE
RANGE (°C) PACKAGE
PKG.
DWG. #
X60008BIS8-41* X60008B I41 4.096 ±0.5mV, 3ppm/°C -40 to +85 8 Ld SOIC (150 mil) MDP0027
X60008BIS8Z-41* (Note) X60008B ZI41 4.096 ±0.5mV, 3ppm/°C -40 to +85 8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
X60008CIS8-41* X60008C I41 4.096 ±0.5mV, 5ppm/°C -40 to +85 8 Ld SOIC (150 mil) MDP0027
X60008CIS8Z-41* (Note) X60008C ZI41 4.096 ±0.5mV, 5ppm/°C -40 to +85 8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
X60008DIS8-41* X60008D I41 4.096 ±1.0mV, 10ppm/°C -40 to +85 8 Ld SOIC (150 mil) MDP0027
X60008DIS8Z-41* (Note) X60008D ZI41 4.096 ±1.0mV, 10ppm/°C -40 to +85 8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
*Add "T1" suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
1
2
3
4
8
7
6
5
SOIC
V
IN
DNC
GND
X60008-XX
DNC
DNC
V
OUT
DNC
GND
X60008B-41, X60008C-41, X60008D-41
3
FN8142.1
May 24, 2006
ABSOLUTE MAXIMUM RATINGS
Storage Temperature Range............. -65°C to +125°C
Voltage on any Pin
Referenced to Gnd............................. -0.5V to +10V
Voltage on “DNC” pins.........No connections permitted
to these pins.
Lead Temperature (soldering, 10 secs)........... +225°C
RECOMMENDED OPERATING CONDITIONS
COMMENT
Absolute Maximum Ratings indicate limits beyond
which permanent damage to the device and impaired
reliability may occur. These are stress ratings provided
for information only and functional operation of the
device at these or any other conditions beyond those
indicated in the operational sections of this specification are not implied.
For guaranteed specifications and test conditions, see
Electrical Characteristics.
The guaranteed specifications apply only for the test
conditions listed. Some performance characteristics
may degrade when the device is not operated under
the listed test conditions.
ELECTRICAL CHARACTERISTICS
(Operating Conditions: V
IN
= 5.0V, I
OUT
= 0mA, C
OUT
= 0.001µF, TA = -40 to +85°C unless otherwise specified.)
Note: 1. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in V
OUT
is divided
by the temperature range; in this case, -40°C to +85°C = 125°C.
2. Thermal Hysteresis is the change in V
OUT
created by package stress @ TA = 25°C after temperature cycling. V
OUT
is read initially at
T
A
= 25°C; the X60008 is then cycled between Hot (85°C) and Cold (-40°C) before a second V
OUT
measurement is taken at 25°C. The
deviation between the initial V
OUT
reading and the second V
OUT
reading is then expressed in ppm.
3. Guaranteed by Device Characterization
Temperature Min. Max.
Industrial -40°C +85°C
Symbol Parameter Conditions Min Typ Max Units
V
OUT
Output Voltage 4.096 V
V
OA
V
OUT
Accuracy
X60008B-41
X60008C-41
X60008D-41
T
A
= 25°C
-0.50
-0.50
-1.00
+0.50
+0.50
+1.00
mV
I
IN
Supply Current 500 800 nA
V
IN
Input Voltage Range 4.5 9.0 V
TC V
OUT
Output Voltage
Temperature Coefficient
(1)
X60008B-41
X60008C-41
X60008D-41
3
5
10
ppm/°C
ΔV
OUT
/ΔV
IN
Line Regulation +4.75V ≤ V
IN
≤ +8.0V 150 µV/V
ΔV
OUT
/ΔI
OUT
Load Regulation 0mA ≤ I
SOURCE
≤ 10mA
-10mA ≤ I
SINK
≤ 0mA
10
20
50
100
µV/mA
ΔV
OUT
/Δt Long Term Stability T
A
= 25°C 10 ppm/1000Hrs
ΔV
OUT
/ΔT
A
Thermal Hysteresis
(2)
ΔT = -40°C to +85°C 50 ppm
I
SC
Short Circuit Current
(3)
TA = 25°C 50 80 mA
V
N
Output Voltage Noise 0.1Hz to 10Hz 30 µV
pp
X60008B-41, X60008C-41, X60008D-41
4
FN8142.1
May 24, 2006
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V
IN
= 5.0V, I
OUT
= 0mA, TA = 25°C unless otherwise specified)
+85°C
-40°C
Unit 3,
I
IN
= 700nA
Unit 1,
I
IN
= 360nA
Unit 2,
I
IN
= 520nA
V
IN
(V)
V
IN
(V)
V
OUT
(V)
DELTA V
OUT
(µV)
(normailized to 4.096V at V
IN
= 5.0V)
(normailized to V
IN
= 5.0V)
LINE REGULATION
LINE REGULATION
(3 Representative Units)
-100
-50
0
50
100
150
200
250
300
4.555.56 6.577.588.59
4.0959
4.09595
4.096
4.09605
4.0961
4.09615
4.0962
4.09625
4.0963
4.5 5.5 6.5 7.5 8.5
+25°C
X60008B-41, X60008C-41, X60008D-41
5
FN8142.1
May 24, 2006
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V
IN
= 5.0V, I
OUT
= 0mA, TA = 25°C unless otherwise specified)
0.1Hz to 10Hz V
OUT
NOISE
1 Sec/div
10μV/div
Band Pass Filter with 1 zero at .1Hz and 2 poles at 10 Hz
LOAD REGULATION
OUTPUT CURRENT (mA)
DELTA V
OUT
(mV)
-40°C
+25°C
+85°C
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
0.6
-20 -15 -10 -5 0 5 10 15 20
SINKING
SOURCING
X60008B-41, X60008C-41, X60008D-41
6
FN8142.1
May 24, 2006
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V
IN
= 5.0V, I
OUT
= 0mA, TA = 25°C unless otherwise specified)
FREQUENCY (Hz)
V
OUT
vs TEMPERATURE
Normalized to 25°C
(3 Representative Units)
TEMPERATURE (°C)
V
OUT
(V)
Unit 1, IIN = 360nA
Unit 3,
I
IN
= 700nA
Unit 2, I
IN
= 520nA
PSRR vs CAP Load
No Load
1nF Load
10nF Load
100nF Load
4.09
4.0912
4.0924
4.0936
4.0948
4.096
4.0972
4.0984
4.0996
-40 -15 10 35 60
85
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
1 10 100 1000 10000 100000 1000000
PSRR (dB)
X60008B-41, X60008C-41, X60008D-41
7
FN8142.1
May 24, 2006
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V
IN
= 5.0V, I
OUT
= 0mA, TA = 25°C unless otherwise specified)
10mA LOAD TRANSIENT RESPONSE
500mV/DIV
CL = .001μF
IN
= -10mA
ΔI
ΔI
ΔI
ΔI
IN
= +10mA
2mS/DIV
50μA LOAD TRANSIENT RESPONSE
100mV/DIV
500μSEC/DIV
CL = .001μF
IN
= -50μA
IN
= +50μA
LINE TRANSIENT RESPONSE LINE TRANSIENT RESPONSE
200mV/DIV
500μSEC/DIV
200mV/DIV
500μSEC/DIV
CL = 0 CL = .001μF
Δ V
IN
= -500mV Δ VIN = +500mV Δ VIN = -500mV Δ VIN = +500mV
X60008B-41, X60008C-41, X60008D-41
8
FN8142.1
May 24, 2006
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V
IN
= 5.0V, I
OUT
= 0mA, TA = 25°C unless otherwise specified)
Z
OUT
vs FREQUENCY
FREQUENCY (Hz)
Z
OUT
(Ω)
no Load
1nF Load
10nF Load
100nF Load
I
IN
(nA)
VIN (V)
-40°C
25°C
85°C
IIN vs V
IN
0
50
100
150
200
250
300
350
1 10 100 1000 10000 100000
0
100
200
300
400
500
600
700
800
4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
X60008B-41, X60008C-41, X60008D-41
9
FN8142.1
May 24, 2006
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(V
IN
= 5.0V, I
OUT
= 0mA, TA = 25°C unless otherwise specified)
I
IN
(nA)
VIN (V)
IIN vs V
IN
(3 Representative Units)
TURN-ON TIME
-1 1 3 5 7 9 11
V
IN
& V
OUT
(V)
0
100
200
300
400
500
600
700
800
900
1000
4.5 5 5.5 6 6.5 7 7.5 8 8.5 9
Unit 1
Unit 2
Unit 3
TIME (mSec)
V
IN
V
OUT
0
1
2
3
4
5
6
X60008B-41, X60008C-41, X60008D-41
10
FN8142.1
May 24, 2006
APPLICATIONS INFORMATION
FGA Technology
The X60008 series of voltage references use the floating gate technology to create references with very low
drift and supply current. Essentially the charge stored
on a floating gate cell is set precisely in manufacturing.
The reference voltage output itself is a buffered version of the floating gate voltage. The resulting reference device has excellent characteristics which are
unique in the industry: very low temperature drift, high
initial accuracy, and almost zero supply current. Also,
the reference voltage itself is not limited by voltage
bandgaps or zener settings, so a wide range of reference voltages can be programmed (standard voltage
settings are provided, but customer-specific voltages
are available).
The process used for these reference devices is a
floating gate CMOS process, and the amplifier circuitry
uses CMOS transistors for amplifier and output transistor circuitry. While providing excellent accuracy,
there are limitations in output noise level and load regulation due to the MOS device characteristics. These
limitations are addressed with circuit techniques discussed in other sections.
Nanopower Operation
Reference devices achieve their highest accuracy
when powered up continuously, and after initial stabilization has taken place. This drift can be eliminated by
leaving the power-on continuously.
The X60008 is the first high precision voltage reference
with ultra low power consumption that makes it practical
to leave power-on continuously in battery operated circuits. The X60008 consumes extremely low supply current due to the proprietary FGA technology. Supply
current at room temperature is typically 500nA which is
1 to 2 orders of magnitude lower than competitive
devices. Application circuits using battery power will
benefit greatly from having an accurate, stable reference which essentially presents no load to the battery.
In particular, battery powered data converter circuits
that would normally require the entire circuit to be disabled when not in use can remain powered up
between conversions as shown in Figure 1. Data
acquisition circuits providing 12 to 24 bits of accuracy
can operate with the reference device continuously
biased with no power penalty, providing the highest
accuracy and lowest possible long term drift.
Other reference devices consuming higher supply currents will need to be disabled in between conversions
to conserve battery capacity. Absolute accuracy will
suffer as the device is biased and requires time to settle to its final value, or, may not actually settle to a final
value as power-on time may be short.
Figure 1.
Board mounting Considerations
For applications requiring the highest accuracy, board
mounting location should be reviewed. Placing the
device in areas subject to slight twisting can cause
degradation of the accuracy of the reference voltage
due to die stresses. It is normally best to place the
device near the edge of a board, or the shortest side,
as the axis of bending is most limited at that location.
Obviously mounting the device on flexprint or
extremely thin PC material will likewise cause loss of
reference accuracy.
Noise Performance and Reduction:
The output noise voltage in a 0.1Hz to 10Hz
bandwidth is typically 30µVp-p. This is shown in the
plot in the Typical Performance Curves. The noise
measurement is made with a bandpass filter made of
a 1 pole high-pass filter with a corner frequency at
.1Hz and a 2-pole low-pass filter with a corner
frequency at 12.6Hz to create a filter with a 9.9Hz
bandwidth. Noise in the 10KHz to 1MHz bandwidth is
approximately 400µVp-p with no capacitance on the
output, as shown in Fig. 2 below. These noise
measurements are made with a 2 decade bandpass
filter made of a 1 pole high-pass filter with a corner
frequency at 1/10 of the center frequency and 1-pole
low-pass filter with a corner frequency at 10 times the
center frequency. Figure 2 also shows the noise in the
10KHz to 1MHz band can be reduced to about 50µVpp using a .001µF capacitor on the output. Noise in the
1KHz to 100KHz band can be further reduced using a
0.1µF capacitor on the output, but noise in the 1Hz to
100Hz band increases due to instability of the very low
power amplifier with a 0.1µF capacitance load. For
VIN = 4.5 - 9V
0.001µF
Serial
Bus
V
IN
V
OUT
GND
X60008-41
REF IN
Enable
SCK
SDAT
A/D Converter
12 to 24-bit
0.01µF
10µF
X60008B-41, X60008C-41, X60008D-41
11
FN8142.1
May 24, 2006
load capacitances above .001µF the noise reduction
network shown in Fig. 3 is recommended. This
network reduces noise sig-nificantly over the full
bandwidth. As shown in Fig. 2, noise is reduced to less
than 40µVp-p from 1Hz to 1MHz using this network
with a .01µF capacitor and a 2kΩ resistor in series with
a 10µF capacitor.
Figure 2.
Figure 3.
Turn-On Time
The X60008 devices have ultra-low supply current and
thus the time to bias up internal circuitry to final values
will be longer than with higher power references. Normal turn-on time is typically 7ms. This is shown in the
graph, Figure 4. Since devices can vary in supply current down to 300nA, turn-on time can last up to about
12ms. Care should be taken in system design to
include this delay before measurements or conversions are started.
Figure 4.
Temperature Coefficient
The limits stated for temperature coefficient (tempco)
are governed by the method of measurement. The
overwhelming standard for specifying the temperature
drift of a reference is to measure the reference voltage
at two temperatures, take the total variation, (V
HIGH
-
V
LOW
), and divide by the temperature extremes of
measurement (T
HIGH
- T
LOW
). The result is divided by
the nominal reference voltage (at T = 25°C) and multiplied by 10
6
to yield ppm/°C. This is the “Box” method
for determining temperature coefficient.
CL = 0
CL = .001µF
CL = .1µF
CL = .01µF & 10µF + 2kΩ
400
350
300
250
200
150
100
50
0
1 10 100 1000 10000 100000
X60008-41 NOISE REDUCTION
NOISE VOLTAGE (µVp-p)
VIN = 5.0V
V
IN
V
O
GND
X60008-41
.01µF
10µF
2kΩ
.1µF
10µF
X60008 TURN-ON TIME (25°C)
(3 Representative Units)
TIME (mSec)
V
IN
& V
OUT
(V)
IIN = 700nA
I
IN
= 520nA
I
IN
= 360nA
V
IN
0
1
2
3
4
5
6
-11 3579
11
X60008B-41, X60008C-41, X60008D-41
12
FN8142.1
May 24, 2006
TYPICAL APPLICATION CIRCUITS
Precision 4.096V, 50mA Reference.
VIN = 4.5V to 9V
2N2905
4.096V/50mA
0.001µF
V
IN
V
OUT
GND
X60008-41
±4.096V Dual Output, High Accuracy Reference
V
IN
V
OUT
GND
GND
V
IN
V
OUT
X60008-41
X60008-41
0.1µF
0.001µF
4.096V
0.001µF
R
1
4.5V to 9V
V
IN
= -4.5V to -9V
-4.096V
4.096V - V
IN
|
R
1
=
-I
OUT
; I
OUT
≥ 10mA
Kelvin Sensed Load
0.1µF
4.5V to 9V
V
IN
V
OUT
GND
X60008-41
V
OUT
Sense
Load
R = 200Ω
+
–
X60008B-41, X60008C-41, X60008D-41
13
FN8142.1
May 24, 2006
TYPICAL APPLICATION CIRCUITS
-4.096V
R
1
Limits max load current
V
IN
V
OUT
GND
X60008-41
C
IN
0.001 C
OUT
= 0.001µF
R
1
= 1250Ω
V
IN
= -9V
with R
1
= 1250Ω, I
LOAD MAX
= 4mA
Negative Voltage Reference
V
IN
V
OUT
X60008-41
GND
4.5V to 9V
0.1µF
0.001µF
V
OUT
+
–
V
CC
R
H
R
L
X9119
V
SS
SDA
SCL
2-Wire Bus
V
OUT
(buffered)
4.096V Full Scale Low-Drift 10-bit Adjustable Voltage Source
4.096V - V
IN
|
R
1
=
-(I
OUT
)
X60008B-41, X60008C-41, X60008D-41
14
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implicat ion or oth erwise u nde r any p a tent or p at ent r ights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN8142.1
May 24, 2006
X60008B-41, X60008C-41, X60008D-41
Small Outline Package Family (SO)
GAUGE
PLANE
A2
A1
L
L1
DETAIL X
4° ±4°
SEATING
PLANE
e
H
b
C
0.010 BM CA
0.004 C
0.010 BM CA
B
D
(N/2)
1
E1
E
NN
(N/2)+1
A
PIN #1
I.D. MARK
h X 45°
A
SEE DETAIL “X”
c
0.010
MDP0027
SMALL OUTLINE PACKAGE FAMILY (SO)
SYMBOL SO-8 SO-14
SO16
(0.150”)
SO16 (0.300”)
(SOL-16)
SO20
(SOL-20)
SO24
(SOL-24)
SO28
(SOL-28) TOLERANCE NOTES
A 0.068 0.068 0.068 0.104 0.104 0.104 0.104 MAX -
A1 0.006 0.006 0.006 0.007 0.007 0.007 0.007 ±0.003 -
A2 0.057 0.057 0.057 0.092 0.092 0.092 0.092 ±0.002 -
b 0.017 0.017 0.017 0.017 0.017 0.017 0.017 ±0.003 -
c 0.009 0.009 0.009 0.011 0.011 0.011 0.011 ±0.001 -
D 0.193 0.341 0.390 0.406 0.504 0.606 0.704 ±0.004 1, 3
E 0.236 0.236 0.236 0.406 0.406 0.406 0.406 ±0.008 -
E1 0.154 0.154 0.154 0.295 0.295 0.295 0.295 ±0.004 2, 3
e 0.050 0.050 0.050 0.050 0.050 0.050 0.050 Basic -
L 0.025 0.025 0.025 0.030 0.030 0.030 0.030 ±0.009 -
L1 0.041 0.041 0.041 0.056 0.056 0.056 0.056 Basic -
h 0.013 0.013 0.013 0.020 0.020 0.020 0.020 Reference -
N 8 14 16 16 20 24 28 Reference -
Rev. L 2/01
NOTES:
1. Plastic or metal protrusions of 0.006” maximum per side are not included.
2. Plastic interlead protrusions of 0.010” maximum per side are not included.
3. Dimensions “D” and “E1” are measured at Datum Plane “H”.
4. Dimensioning and tolerancing per ASME Y14.5M-1994
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